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NDT EXAM LATEST UPDATED
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NDT EXAM LATEST UPDATED2024-2025
Circular magnetization of a part can be used to detect defects that are:
parallel to the long axis of the part
In magnetic particle inspection, a flaw that is perpendicular to the magnetic
field flux lines generally causes.
a large disruption in the magnetic field
Liquid penetrant inspection may be used to detect discontinuities that are _____
on the surface.
Open to
The ease with which material can conduct lines of magnetic flux is called its
Permeability
The ability of a material to retain magnetism after the magnetizing force is
removed is called
retentivity.
Two important characteristics of the testing medium used for magnetic particle
inspection are:
High permeability
Low retentivity
A discontinuity may or may not affect the usefulness of a part.
true
Pick the steps involved in a dye penetrant inspection.
Inspect and interpret results
Remove the Penetrant with an emulsifier or cleaner
Clean the surface of the part
Dwell time
Apply developer
Apply the Dye Penetrant
The penetration of a fillet weld should be what percentage of the thickness of
the base metal __ to __ percent.
25 to 50
, Three types of developers that may be used with the liquid penetrant inspection
method are:
Dry, Wet, and Non-aqueous
A mechanic has completed a bonded honeycomb repair using the potted repair
technique. What NDT methods are used to determine the soundness of the
repair?
Coin Tap Test
Metallic Ring Test
What nondestructive testing method is suitable for the inspection of most
metals, plastics, and ceramics for surface and subsurface defects?
Ultrasonic
What NDT method requires little to no preparation?
Eddy Current
Liquid or Dye Penetrant can be used on which of the following
1.Steel
2.aluminum
3.non porous metal
4.non porous plastic
5.titanium
6.copper
A ________ is an optical device that allows us to see inside and engine without
disassembling it. The _________________ borescope uses a bundle of optical
glass fibers
Borescope
fiber optic
Name some tools that are commonly used to assist in making visual inspections
Magnifying glass
Mirror
Flashlight
Borescope
The time the penetrant remains on the surface of the part is known as the
______ time
Dwell
The two methods of testing by magnetic particle inspection are:
a. Continuous
b. Residual
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